<!DOCTYPE html>
<html>
<head>
    <title>摇一摇</title>
    [#include "/includes/header.html" /]
    <style type="text/css">
        /* 大转盘样式 */
        .banner {
            display: block;
            width: 95%;
            margin-left: auto;
            margin-right: auto;
            margin-bottom: 20px;
        }

        .banner .turnplate {
            display: block;
            width: 100%;
            position: relative;
        }

        .banner .turnplate canvas.item {
            width: 100%;
        }

        .banner .turnplate img.pointer {
            position: absolute;
            width: 31.5%;
            height: 42.5%;
            left: 34.6%;
            top: 23%;
        }
    </style>
</head>
<body>
<div class="content native-scroll content-block">
    <img src="${webctx}/resources/images/1.png" id="shan-img" style="display:none;"/>
    <img src="${webctx}/resources/images/2.png" id="sorry-img" style="display:none;"/>
    <div class="banner">
        <div class="turnplate"
             style="background-image:url(${webctx}/resources/images/turnplate-bg.png);background-size:100% 100%;">
            <canvas class="item" id="wheelcanvas" width="422px" height="422px"></canvas>
            <img class="pointer" src="${webctx}/resources/images/turnplate-pointer.png"/>
        </div>
    </div>
    <div class="content-padded">
        <div class="lottery_count">
            <p>你总共还有<span id="db_buyer_score" style="color: #f60">${_buyerUser.scroe }</span>个${_sellerUser.jifenalias}
            </p>
            [#if lottery.conditionType == 2]
            [#if lottcond.tradeType ==1 ]
            <p>最近<span id="user_total_used_count" style="color: #f60">${lottcond.conditionDay }内下单</span></p>
            [/#if]
            [#if lottcond.tradeType ==2 ]
            <p>自<span id="user_total_used_count" style="color: #f60">
					${lottcond.conditionTradeStartdate }到${lottcond.conditionTradeEnddate }下单</span></p>
            [/#if]
            且订单状态为
            [#if lottcond.tradeStatus==1 ]确认收货[/#if]
            [#if lottcond.tradeStatus==2 ]订单付款[/#if]
            且订单金额满${lottcond.tradeMoney }元
            <p>可抽奖</p>
            [/#if]
            [#if lottery.conditionType == 3 ]
            <p>每次抽奖需要扣除:<span id="user_total_used_count" style="color: #f60">${lottery.needPay }</span>个积分</p>
            [/#if]
            [#if lottery.conditionType == 4 ]
            <p>每次抽奖需要扣除:<span id="user_total_used_count" style="color: #f60">${lottery.needPay }</span>个淘金币</p>
            [/#if]
            [#if lottery.conditionType == 1 ]
            <p>本次抽奖活动不限条件，到店即可抽奖</p>
            [/#if]
        </div>
        <div class="lottery_count">
            <p>每人每天只能参与<span id="today_used_count" style="color: #f60">${lottery.dayCount }</span>次抽奖</p>
            <p>你今天已抽奖<span id="user_today_used_count" style="color: #f60">${usetodaycount }</span>次</p>
        </div>
        <div class="lottery_count">
            <p>每人总共只能参与<span id="total_used_count" style="color: #f60">${lottery.allCount }</span>次抽奖</p>
            <p>你已总共抽奖<span id="user_total_used_count" style="color: #f60">${usetotalRecord }</span>次</p>
        </div>
    </div>
</div>
<input type="hidden" id="lottery_id" value="${lottery.id }"/>
[#include "/includes/footer.html" /]
<script type="text/javascript" src="${webctx}/resources/js/jquery-2.0.0.min.js"></script>
<script type="text/javascript" src="${webctx}/resources/js/awardRotate4jq.js"></script>
<script type="text/javascript">
    var turnplate = {
        restaraunts: [],				//大转盘奖品名称
        colors: [],					//大转盘奖品区块对应背景颜色
        outsideRadius: 192,			//大转盘外圆的半径
        textRadius: 155,				//大转盘奖品位置距离圆心的距离
        insideRadius: 68,			//大转盘内圆的半径
        startAngle: 0,				//开始角度
        bRotate: false				//false:停止;ture:旋转
    };

    function initDrawView(callback) {
        $.post('/lottery/initView', {
            lotteryId: $('#lottery_id').val(),
            snick: $('#seller_nick_input').val()
        }, function (_json) {
            if (_json.code != 200) {
                errorMessage = _json.msg;
                doing = false;
                $.alert(errorMessage);
            } else {
                var awards = _json.data;
                for (var i = 0; i < awards.length; i++) {
                    var award = awards[i];
                    /* var li = $("#award_"+award.award_pos);
                    li.find("h2").text(award.award_name);
                    li.find("div.prize_type_name").find("p").text(award.type_name);
                    li.find("div.prize_item_icon").html(award.award_count+"份"); */
                    turnplate.restaraunts [i] = award.award_name;
                    if (i % 2 == 0) {
                        turnplate.colors [i] = "#FFF4D6";
                    } else {
                        turnplate.colors [i] = "#FFFFFF";
                    }
                }
                //补位
                for (var i = awards.length; i < 8; i++) {
                    turnplate.restaraunts [i] = "谢谢参与";
                    if (i % 2 == 0) {
                        turnplate.colors [i] = "#FFF4D6";
                    } else {
                        turnplate.colors [i] = "#FFFFFF";
                    }
                }

                drawRouletteWheel();
                if (callback) callback();
            }
        });
    }

    $(document).ready(function () {
        //动态添加大转盘的奖品与奖品区域背景颜色
        //turnplate.restaraunts = ["50M免费流量包", "10闪币", "谢谢参与", "5闪币", "10M免费流量包", "20M免费流量包", "20闪币 ", "30M免费流量包", "100M免费流量包", "2闪币"];
        //turnplate.colors = ["#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF","#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF","#FFF4D6", "#FFFFFF"];
        initDrawView();
        var rotateTimeOut = function () {
            $('#wheelcanvas').rotate({
                angle: 0,
                animateTo: 2160,
                duration: 8000,
                callback: function () {
                    alert('网络超时，请检查您的网络设置！');
                }
            });
        };

        //旋转转盘 item:奖品位置; txt：提示语;
        var rotateFn = function (item, txt) {
            var angles = item * (360 / turnplate.restaraunts.length) - (360 / (turnplate.restaraunts.length * 2));
            if (angles < 270) {
                angles = 270 - angles;
            } else {
                angles = 360 - angles + 270;
            }
            $('#wheelcanvas').stopRotate();
            $('#wheelcanvas').rotate({
                angle: 0,
                animateTo: angles + 1800,
                duration: 8000,
                callback: function () {
                    if (txt != "谢谢参与") {
                        alert("恭喜您获得[" + txt + "]");
                    }
                    turnplate.bRotate = !turnplate.bRotate;
                }
            });
        };

        $('.pointer').click(function () {
            if (turnplate.bRotate) return;
            turnplate.bRotate = !turnplate.bRotate;
            //获取随机数(奖品个数范围内)
            /* var item = rnd(1,turnplate.restaraunts.length);
            //奖品数量等于10,指针落在对应奖品区域的中心角度[252, 216, 180, 144, 108, 72, 36, 360, 324, 288]
            rotateFn(item, turnplate.restaraunts[item-1]);
            console.log(item); */
            $.post("/lottery/start", {
                id: $("#lottery_id").val(),
                snick: $('#seller_nick_input').val()
            }, function (resp) {
                click = false;
                if (resp.code != 200) {
                    setTimeout(function () {
                        alert(resp.msg);
                        turnplate.bRotate = !turnplate.bRotate;
                    }, 1000);
                } else {
                    drawResult = resp.data;
                    var item = drawResult.index + 1;
                    rotateFn(item, turnplate.restaraunts[item - 1]);
                }
            });
        });
    });

    /* function rnd(n, m){
        var random = Math.floor(Math.random()*(m-n+1)+n);
        return random;
    } */

    //页面所有元素加载完毕后执行drawRouletteWheel()方法对转盘进行渲染
    /* window.onload=function(){
        drawRouletteWheel();
    }; */

    function drawRouletteWheel() {
        var canvas = document.getElementById("wheelcanvas");
        if (canvas.getContext) {
            //根据奖品个数计算圆周角度
            var arc = Math.PI / (turnplate.restaraunts.length / 2);
            var ctx = canvas.getContext("2d");
            //在给定矩形内清空一个矩形
            ctx.clearRect(0, 0, 422, 422);
            //strokeStyle 属性设置或返回用于笔触的颜色、渐变或模式
            ctx.strokeStyle = "#FFBE04";
            //font 属性设置或返回画布上文本内容的当前字体属性
            ctx.font = '16px Microsoft YaHei';
            for (var i = 0; i < turnplate.restaraunts.length; i++) {
                var angle = turnplate.startAngle + i * arc;
                ctx.fillStyle = turnplate.colors[i];
                ctx.beginPath();
                //arc(x,y,r,起始角,结束角,绘制方向) 方法创建弧/曲线（用于创建圆或部分圆）
                ctx.arc(211, 211, turnplate.outsideRadius, angle, angle + arc, false);
                ctx.arc(211, 211, turnplate.insideRadius, angle + arc, angle, true);
                ctx.stroke();
                ctx.fill();
                //锁画布(为了保存之前的画布状态)
                ctx.save();

                //----绘制奖品开始----
                ctx.fillStyle = "#E5302F";
                var text = turnplate.restaraunts[i];
                var line_height = 17;
                //translate方法重新映射画布上的 (0,0) 位置
                ctx.translate(211 + Math.cos(angle + arc / 2) * turnplate.textRadius, 211 + Math.sin(angle + arc / 2) * turnplate.textRadius);

                //rotate方法旋转当前的绘图
                ctx.rotate(angle + arc / 2 + Math.PI / 2);

                /** 下面代码根据奖品类型、奖品名称长度渲染不同效果，如字体、颜色、图片效果。(具体根据实际情况改变) **/
                if (text.indexOf("M") > 0) {//流量包
                    var texts = text.split("M");
                    for (var j = 0; j < texts.length; j++) {
                        ctx.font = j == 0 ? 'bold 20px Microsoft YaHei' : '16px Microsoft YaHei';
                        if (j == 0) {
                            ctx.fillText(texts[j] + "M", -ctx.measureText(texts[j] + "M").width / 2, j * line_height);
                        } else {
                            ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height);
                        }
                    }
                } else if (text.indexOf("M") == -1 && text.length > 6) {//奖品名称长度超过一定范围
                    text = text.substring(0, 6) + "||" + text.substring(6);
                    var texts = text.split("||");
                    for (var j = 0; j < texts.length; j++) {
                        ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height);
                    }
                } else {
                    //在画布上绘制填色的文本。文本的默认颜色是黑色
                    //measureText()方法返回包含一个对象，该对象包含以像素计的指定字体宽度
                    ctx.fillText(text, -ctx.measureText(text).width / 2, 0);
                }

                //添加对应图标
                if (text.indexOf("闪币") > 0) {
                    var img = document.getElementById("shan-img");
                    img.onload = function () {
                        ctx.drawImage(img, -15, 10);
                    };
                    ctx.drawImage(img, -15, 10);
                } else if (text.indexOf("谢谢参与") >= 0) {
                    var img = document.getElementById("sorry-img");
                    img.onload = function () {
                        ctx.drawImage(img, -15, 10);
                    };
                    ctx.drawImage(img, -15, 10);
                }
                //把当前画布返回（调整）到上一个save()状态之前
                ctx.restore();
                //----绘制奖品结束----
            }
        }
    }

</script>
</body>
</html>